Clues and Ideas

Articles
Title
Small DC Motor as a Dynamo (IP059)
2N4987 and 2N4990 (IP057E)
2N4988 and 2N4989 (IP058E)
2N4983 and 2N4986 (IP055E)
2N4984 and 2N4985 (IP056E)
Three-Way Switch (IP053E)
Two Wire Control for Two Lamps (IP054E)
Two-Way Switch (IP052E)
Extracting Fuses (IP050E)
Hertz Loop (IP051)
Paper Clip as Alligator Clip (IP049E)

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TTL Sports Lottery Tip (CB12367E)
This circuit draws one of the three possible guesses of a sports lottery logo: column 1, 2 or the...
Tesla Coil (CB25779E)
This Tesla coil was found in the November 1994 issue of Electronics Now magazine. T1 is a TV...
Audio Oscillator (CB457)
Hartley oscillator operates in the audio range. Frequency can be adjusted by P1 and also depends...